Tar, sand, and asphalt mixer



T. H. MURPHY.

ATAR, SAND, AND ASPHALT MIXER.

APPLICATION FILED IuNEzs, 1920.

IIIIIIIIIiI ATTORNEY 'THOMAS H. MURPHY, oF

f p :Application inganni@ 25,

To all trimm tfmag/ concern:

Be it known that I, THoMAsH. MURPHY,

i a citizen of the United States, residing at particularly to a vmachine designed asl a tar,

Brooklyn, in the county ofKings'and State of New York, have invented certain new and useful Improvements in Tar, Sand, and Asphalt Mixers, of which-the lfollowing isa specification.k 1

This invention has relation to new and useful improvements in agitators andimore asphalt and sand mixer to be used in connection with thepaving of streets and particularly for falling in .between paving blocks to fillV up crevices and cause the adhesive of vadjacent blocks to prevent them y from becoming loose or displaced.

vide a machine embodying the characterisyat tics above named Yand including in addition thereto means for generating steam and'for circulating .the same around the mixing de-Vv vicefor maintaining the temperaturevof its contents. j f f In addition to the foregoing this invention comprehends,improvements in the details of construction and arrangement on partsrtobe hereinafter described and particularly-set forth in the appended claims.

In the accompanyingdrawing the figure is a view in longitudinal section, partly in elevation of a mixing machine constructed in accordancewith my invention. I Vith reference to thefdrawings, 1.0, indicates a truck having supported thereupon an inverted frusto-conical container` indicated at 11. The upper end is lopen, but normally closed by means of a removable cover 12. A support 13 is extended diametrically across theupper end 0f the container to form a journalV for a vertical shaft` 14 located centrally of the container, the lower end of the shaft passingthrough a bearing'v in the bottom of the container and supported upon a thrust bearing 15 mounted upon the truck.

Mounted upon the shaft 14 within the container is a plurality of blades 16 having Specification of ietters Patent.'k Y

imooirvlvlv,l NEW YoRx.

TAR, SAND, AND ASPHALTMIXER.

, Patented Feb. 7, 1922. 1920. seria1No.391,e39

Y UmTlu*STATES PATENT OFFICE.

their outer edges formed parallel `with the sides of thecontainer andjadjacent blades located at right angles. Each blade is furthermore provided with al centralopening 17 tov facilitate the agitation of the contents of the container.- Mounted Vupon the lower end of they shaftv 14 exteriorly of the container is a beve] gear 18 in meshing engagement with a similar gear 19 mounted upon a horizontal shaft `20.4 Said shaft is suit ably journaled and provided at one end with a member 21 -ona clutch, lthe othery member being'indicated. at522. The member 21 is shiftedby means of a lever 23 to engage or 'disengage the-clutch. The member-22 of the clutch is suitably jour-naledfor` rotation and'providedwitha spur kgear 24', the latter meshing with a pinion-25 mounted upon the :fly wheelof anv internal combustion engine26. l A second shaft 27 is Aprovided hav lng .a gea-r 28 in rmesh-ing engagement withV the pinion 25;: The shaft 27 also carries fast and loose pulleys 27".

Supported uponthetruck is` a Vfire box 29 containing a grate upon whichv fuel may be burned or a' gasolinetorch supporteddand having ailue '30Jconnectedto its upperportion. The upper end'of-,the re box is open tov receive .af boiler 3l therein, the latter being in the nature of .a casti-ron box having its upper .end open andV its lower' portionextending into the fire-box. t A support 32 extends across the upper end of the boiler 31'" Vupon which a rotary pump 33'is supported,

the latter having a shaft' 34 .connected with theA rotating part,.said shaftcarrying a pula ley `35. A belt 36 V is trained around said pulley 35 and around one or the other of the pulleys,- thebelt being'shiftable from one ortheI other of said last mentioned pulleys` by`means ofA `an ordinary belt, shifting apparatus.k The inlet of the pumpV is connected to a flexible hose 3'? which may he entered into a tank of molten tar or the; like.' while the outlet ofthe pump is connected with a conduit 39 which enters the upper end of the container 11. A coil of pipe 40 is wound spirally around 'the exterior of the rcontainer 11 with the upper end of the pipe connected to the upper `end of the boiler 31, a valve 41 being provided at the lower end of the pipe 40 to permit water of condensation to be drained therefrom. It is also desirable that laggingbe appliedto the outer surface of the container 11 as indicated at42, the lagging being preferably held in place by means of a layer of foraminous niateiial 43. A spout 44 is provided at the lower end of the container il wherebythe ,contents may be drawn therefrom, and the spout is normally Vclosed adjacentits point of connection with the con--V tainer by, means of -a slidable closure 45. A second closure 4G is providedto-the lower end of the spout, preferably in the nature or.' a butterfly valve.

i In operation, the prime mover26 is started and motion thereof is communicated through the gears 24 and 25 to the shaft 20, thence through the gears 18 and i9 vto the shaft 14, rotating the blade. kThe cover l2 is removed and a suitableV quantity of sand, gravel or other material poured into the container. At the same time the hose 37 vis entered Vinto a tank of molten tar, asphalt or the like and the belt 36 shilitedvto'thc .fast pulley, so that the motion is communi-7 cated to the pump 33, thus Vpermitting the latter' to withdraw the tar, asphalt or the like from the tank andto deliver the same into the container ll. `The motion of the blades lwill effectuallyl incorporate these materials -one with another'into afhomoi geneous mixture, which may be withdrawn when desired by iirst shifting the slide 45, and vthen rotating the valve 46. Thus, it will be' readily seen that bytheuse of thisV machine the expense and loss ottime in-.

proximity to the point/where the materialsV are lto be delivered. The present system 'of mixing these materials isv to drawv the.

tar and asphalt in a wheelebarrow shovel in the sand -and'mix with a hoe; this does not assemble the lmaterials Yproperly andy Vwhen dumped on the pavement there is all sand in one place and tar in another. In this way the pavement becomes coarse and uneven and sunken below .normal grade through the lack of enough sand in the joint filler. It will be seen that by the use of this vmachine the expense and loss of time y incidental to mixing thesef materials byl hand is eliminated, and by permittingthe use oi more sand a saving ol tar and asphalt is eiiected which lisrthe largest item of'cost in the paving of streets not to mention the nent reduction inthe cost oi mainy Other uses vand advantages will readily 'occur 'to those familiar to the art to which this invention appertains.

llhile l haveV illustrated andV described my invention with some degree of particu- `arity, .l realize that in practice various alterations therein may lbe made. I there-Y fore reserve the right and privilege.V of changing the form ci' the details olfconassurance ci a more durable` job with 3,.'

struction or otherwise altering the arrangenent of the correlated parts without departing from the spirit of theV invention or the scope of the appended claims.

Having thug describedl my invention what Y l claim as new and desire to 'secureby United States Letters Patent is 1 A. mixing machine including in com! bination a container, an agitating element located therein, a pump, a connection 'bea tween the pump and container, Aand asingle means :or vheating the,containeraiid'for heating the pump.` i r '2. lA mixing machine including incom bination a container, 'an' agitating meansv therein, a pump, 'a connection between the pump-and container, a Vcoil surrounding theV container, a source of steam for supplying the" coil, and an enclosure for the pumpV to Y permit the steam to .be'accessible' thereto to maintain the pump at a Vhigh temperature.

3.*A mixingu machine comprising in comhina-tion' ajcontainer, an agitating means therein, a coil surrounding the container, a fire-box, a boiler within the lire-box, the upper end of the coil being connected. to said boiler. v Y

4i'. A mixing machine comprising in com bination, a container, an agitating element therein, `a coil surrounding the element, a

lire-box, av boiler located in the fire-box open at one end, thel upper end ofthe coilbeing connected to the boiler, a support'within the boiler, a pump mounted upon said support, a connection between the pump and container, and a closurefor the upper end of theboil'er. also enclosing the pump.

In testimony whereof I aiiix my signature.V

THOMAS ii. MURPHY, [1.. Si 

